State the law of conservation of electric ch5v bj6pb;vj1 j:l+ vanarge.

  Is it possible for two negative charges to attract eattfc gg96rvd0ay+rh l4 2-dq /ch other?

  Is it possible for a positive a 9 c2ix8v08)lr1zc *vse nhkphnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of oqo idbkz;tj/;(71xt silk. During the process the glass rod acquires a posidzo1t/b;o;kqti7 (xj tive charge and the silk

  A proton carries a

  The model of the atom bbt j7nqlupn lu n1ny+8gg7/s*0 u(m 6shows a

  A neutral atom always h4i 0u0t rux, hzc3n2mqas

  An atom has more electrons thang.jsug7t. celdtn k;3e6 1qk5 protons. The atom is

  Materials in which tm-sr r a5aor,p(d(bjf53k (gr he electrons are bound very tightly to the nuclei are referred t rars5 b r-(o3(j5dfa,g(pr kmo as

  Materials in which the electrons are boun d97xl-yxl:t hd very loosely to the nuclei and can move about freely withinht9xlld:7-y x the material are referred to as

  A negatively charged rod is brought near one end of ans,uelkb0h;0t 65:yl4 pj ongy uncharged metal bar. The end of the metal bar farthest from t 0sl:t6be5;h olugypnj 40k y,he charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrale :sib , w 67ny6dkok6:(jazs)p3yjak. They are placed near ea6kk6ayybajspd,: 7 jeki6w)( n z:3so ch other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posit /ezuk..e ,.qnt*sjqtively?

  An originally neutral electroscope is briefly lmroau ,clyx)si(6 92touched with a positively charged glass rod. The eley96)is2lmr(,xaluo c ctroscope

  An originally neutral electroscope is grounded briefly while a q;2 mq f1vhhxjfi4h0(, o e-t.e)nbfz positively charged glass rod is helvihthqnz01 e4( of-xfbqh f;m, e)j2. d near it. After the glass rod is removed, the electroscope

  A positive object touches a neutra grtw1+69smvf uekg*qt7 ye2)l electroscope, and the leaves separate. Then a negative object is bro7kwue9es* ytq 1)mfr+ gvt26gught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablt0/b mi-vij q.)3pmnf e. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, butmit 30q/b)jmp - vinf. does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coxf0svbd8+xl or x/:s.ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by znbo q).k- 2qja6,u kga distance d. The first charge is larger in magnitude than t. ngqz ,ku-)jok26aqbhe second charge.

  Sphere A carries a net charge a2ig u. j-tur8and sphere B is neutral. They are placed near each other on an insulated.uj g-2i8autr table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If th*1bun .blu6v3 kee1sw-9l k owe charges on both objects are doubled with n ww3nlkksbu16u*9 e1 -bv.oelo change in separation, the force between them

  Two charges are separated by a distance d and)g7 n cxrw nokaq14-4f exert mutual attractive forces of F on each other. If the charge1)x 4nqo nf7wk c4a-grs are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the + i;j(kk4u yww+gnt q.j4tq;sforce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduce4 k t;qn+4+ywjq.kg(sju;wtid to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1 0b dsk:-0 vh7akqzkd/3ow(p z.0 m. What happens to the magnitude of qwka kz7-zv:h/ kd b0dop0( s3the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dijt5uumm/a y +miny dna/18x)s-s,i n,stance of 1.0 m. What happens to the magnim+-ydx, sias nn/ujm/8i,ny )ta1mu 5tude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1./.l ;l djl ktfq3vj/axzh7-o:0 m. What happens to the7o/ j:qvjfl; dl /tlakxh- z.3 size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placeylo;yb..o zl :huj 12qd at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the 1yobl:ojzuhy2;ql.. square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at th) t3w8;c1g9a 5 zl2b hfsnrvzde centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placedsz lw9ca3gfdtn25zb rv) ;8h1 at one of the other vertices?

  Which of the following is nov9 atsx 7n4k(it a vector?

  At twice the distance from a *tf5t rl3sk, jpoint charge, the strength of the electric field

  Is it possible to have a zero electric field value betweenx c;k7/ 4zu7z( avcfrtv5 qn;h a negative and positive charge along the line joinzn;7v v(;xq4 kuhrcat75 /fzcing the two charges?

  Is it possible to have a zero electric field value between two positive chargesdug(* yfia z1/ along the line joining the g*1f zud i/(yatwo charges?

  Electric field lines near ey4-dvga dl )-bmx b,i9;dyr /,hm7vdpsitive point charges

  The electric field shownstnphjt56doj9 (x mr (muw06-

  Can electric field lines intt3zp,sp)i x c: ubqn8qu.k68 xersect in free space?

  A solid block of metal in electrostatic equilibrium is pl 16q1oye8wlzes38bcx eey38eaced in a uniform electric fiel163eeeebo l 1wes8x czyyq 883d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere a(5nks4j(uk qkrqug ;9 3o.lv gnd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the ceng;jk4g (35.s9o nq kur lkuvq(ter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uu0cjga6 nys i3m* *rel 4uy(+cniform electric field is directed straight upward. What can be said concerning the charge on**acg(n0j ycs u3u6y4l+m eir the block's top surface?

  If a conductor is in electrostatic equilibrium near an elect07wjn gqz/sr0axw5 9aric charge

  A positive point charge is enclosed in a k/hsrcsrj(/wsm(hbn2,cev3hs7 3w *hollow metallic sphere that is grounded. As compared to the case without the hollow sphere3w c3h( smv w,7che/kj rs hs*s2/br(n, the electric field at a point directly above the hollow sphere has

State three properties i2:jmtwr1 (cus;-iwxof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrr;ihf4/nn /+t(jz zf f z,/dfron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of8,icz+ c k6f/nb)+f- o9mhamc mv ,lhm +2.00 mC. How many more protons than electrons does this +mchcm/ mkf)no-b+a ,6,lv8 fh m ci9zpiece of plastic have?

  What is the charge on 1 kg of protonsve;pu f0ys1cea; 14:uwqq* io?

  An atomic nucleus has a cm9 )g r.mixve9vmf*l 21wmma4 harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge valuo4. zy1 u-1 s8linnrloes of 2.0 and -4.0 mC, respeunr oo4l.n1-szly i81ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 lc8vb qjf(0r1/gs1paN. What is the magnitude of the secovf1 gcb j8rsq 0la1(p/nd charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hof e5dvjos f,8ve*t(b* w far apart are they?

  The force between a t4p :kn j j(jkvi6/mz1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they a3zcf,qg4oj1p)x5 kmv e r8. ze4q:afw; uejt* re moved to a new sezg4q4t5 ;81kmq.e:o*f ,p) j cf werazje3vxuparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the xt4z u3hy7 hdk6v /4ckd-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force whichvk4thy/u6d74dk 3z ch acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge +vzoyqpz3c 8,k0gnwbmj7- g1iqglq5*nlm.6of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at t0 +z. y vl5l8mb* gkz7nqcj3-mpwggoiqn, 6q1he origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =r4zm+ q.d ws3ta2p(pc 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of wm p23p.4t(sc+qdaz r the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, a c*rl jtn0e,: 9; oazzx3fbh3m;5 qfhknd a second point charge of -Q is placeq*e;zt cb9jk 3x: 5;3 hroflhfanz m0,d at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mui q lq1r4.pq5); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force .4q rpu15ilqqon the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.08ign :ri/ xs3k nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the3ri 8/ xngski: 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ ryhv( p//yt4xilateral triangle which measures 30 cm on a side. Wh ythry(x4//vpat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +3tkd 9(r ux0touw(+8noyy)m+(vof td 4Q, which are separated by 3.0 m. At what poin9d+tyvk+(o tw d runuo38 om)(0ty(fxt, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where otvqfg,w n40 9w6j +hvxwa2 8 8ko1ydyqn the x-axis can a third char9+d8f 0vytyw82wknhw,qg 1jqo64v a xge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wkng(+c4a: t95nhlc (yrpz3zxh n( hn6here can a third positive chargetynpcn +(azzhhcxk3 n9g (h( 6:54lrn +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g..41cybgeyp7vg v9cabha h* wtr)1;sp3j ;ve 5 A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the fozmjv (-p11fro(js a 6p)wts;lrce of gravity by the attraction of a fixed proton some dwjsa6(rsvm1p j)l 1z(to- ;f pistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung k4c3 js+ nblo/from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unc +onlj4/sb3ktil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of theyic( 2b e3irl wbe )c7)xqu*e) electric field at a distance of 1.0 m from the )icr*ye qx( w3)2 ubbile7)cenucleus?

  What are the magnitudp 2 knh0zjf7l9i e ge04bsw1.oe and direction of the electric field at a distance of 1.50 m from a 50.0-nC chpbfn gkie 4z9w.s7e0j01olh2 arge?

  A 5.0-C charge is 10 m zf+r2+ic 5odil(htb 2from a small test charge. What is the magnitude of the electric field at the location of the test charge( hbr+ i5 l2ic+zodf2t?

  A 5.0-C charge is 10 m from a small test charge. Whatv60bu+lg/wcm,e wh 3r,b:nuq is the direction of the electric fielvg,0 wuhuq,/rm :6nb3cleb +wd?

  A 5.0-C charge is 10 m from a small test charge lk-ur /f0yn,myzi x,,. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargey0ml i,yr,uxf z-k/, n?

  Two point charges each have a vavsj cj u);4,:ktv66h j8d- hx qsgdc:qlue of 3.0 C and are separated by a distance of 4.0 m. What ichdx: h4- )j vsvs, gdq8k:66jctq; jus the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm um)dtb: r 1zf0leg r74 dsf;bige5h1 ,mark of a meter stick and a -4.0 mC charge is;et)b rdf4z0fmsh1bgu:r57 1dle,gi placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a c y6;ts8zp(e2:+u-bvajhzbl -4.0 mC charge is placed at the 50 cm mark. At what point on a li:ybs+alzt 6-j8 cvp2(;z hbuene joining the two charges is the electric field zero?

  Two point charges of +3.0 m)x*rjud8n z 1w 0spsyc4;.pj sC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whar0;udwpsx * sj41 zsp)c8.jynt is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s0mk fjqj)uags/kb-o:og t570e.gn 1u quare of side 0.50 m. The last corner is occupied by a 0-gnu /ke jagjgs :571bqok fmo0tu) .-3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges ax /owtdp+xq t-tktt-x4 .w) d,re placed at the corners of the wd,-xw t4kd.- tx)p+ /oxtqttsquare as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chab: aov v wit(;0w,5eirmyx 8-acx4 f1brge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elev a0xrbv1wtia (m8 4e:,5ofb-ywcix;ctric field?

  A particle with a charge of 4.0 mC ob .ib(-qgzh6c7bl6(mfib h0 has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is plasr l n.x7j5ev wfk4z.+ced in an electric field of 6000 N/C pointing downward. Wk4 zsf7 jwv.n+.5rxlehat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.5.ja3 rnf.octph2h 62ag4wbi00 nC. The ball is placed inside of jacht p2bnhw 32ga4r6. .5ia uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Wh (z40ijhuwf t0at is the magnitude of the electric field 5.0 cm from thh4itjw0u f 0(ze sphere's surface?

  A metal sphere of radj0tu )routoq86w9-x c ius 2.0 cm carries a charge of 3.0 mC. What is the electric f)jr6txu 8t u- oowqc90ield 6.0 cm from the center of the sphere?